MSK Ø 125 controller.An MSK set with a Ø125 damper is a modern fireplace controller with a screen, which can be used for all air and water jacket inserts. Its task is to supply cold air (for combustion) from the outside of the building, directly to the combustion chamber, so that it is maximally effective. Thanks to its application, we are able to save up to 30% of timber and already after 2 months of operation, pays itself back. CONTROLLER FUNCTIONS: - controlling two c.h. pumps and one, i